There are a lot of Battery conversion projects and hacks for hand tools out there, and some even use this battery. But this project intends to copy the case using 2 existing batteries I own (one dead) and modify the case to house 18650's plus a BMS. The connection will remain the same to plug into the drills and will provide the same capacity and voltage and maybe some additional features like a charge state indicator.
So I have my 2 batteries. Now I need to start measuring them up.
One of the batteries is dead, it will not hold any reasonable charge to do any work. I intent to use the top half of this one to get the mating dimensions to fit into the drill.
As you can see, its been mauled by a screwdriver and god knows what I used to pry this thing open. All the more reason to generate models to create spares.